SU561147A1 - Dynamic Performance Analyzer - Google Patents

Description

one

The invention relates to electrical measuring technology and can be used to study the dynamic properties of automatic systems.

Devices are known for measuring the characteristic characteristics of automatic systems l.2l.

The principle of operation of the known devices is based on obtaining the weighting function of the system under study with its subsequent vol. development and conversion to the values of the detected and imaginary, amplitude and phase frequency characteristics.

However, the known device is not intended to directly measure the sustainability of the studied systems.

The closest to the purpose and design features of the invention is the ampliometer of electrical oscillations designed to measure amplitude, phase and frequency of oscillation and using compensatory methods for measuring parameters. This meter contains a harmonic waveform generator connected

through the switch to the first input of the indicator, the second input of which is connected to the output of the object, the lag unit and the amplifier connected to the kgxmaxator, the invert connected to the input of the voltage divider

1z.

The disadvantage of this device is the limited field of application, since it does not directly measure the stability of the tested systek 1 and has a measuring range from the O and 90 phases.

The purpose of the invention is to expand the field of application of the device by providing the ability to directly measure the stability margins and increase the measurement range of the phase-frequency characteristics.

The goal is achieved in that the device contains a perturbation generator, a voltage meter, a source of reference voltage and an additional voltage divider, the input of which is connected to the source of reference voltage, and ni. connected to the input of the inverter, B1.1 input H; .-; I.V.V impedance of voltage DI1 Nen with the first tl i-

In the course of the lelyt-vlp pair of the second output of which the piss is ;;: 1: e .: p.: i Oiia; -; the input of the unit zypazdyrapng.;, gsp; sratora voemushenky through col5 ;. f :: B:; 3 iH from the input of the object.

Such a device utilization allows non-mediated but ijav.epaTb reserves of stability of an associated object, frequency of oscillation and ampoule and 4th 130 frequency; This is an example of the following: The measurement of the photoelectric frequency characteristics is extended and ranges from -180 to + 18 ° F.

The drawing shows a diagram of the analyzer dynamic characteristics.

And the cinicizer analyzer: the characteristics contains the block “delayed 1” and “amplifier 2”, connectors 1 to. Triple-heading-K) KOKS mutator 3,: the coder; the generator also has a generator 1, 4, photochnik of the 5th terminal 5, connected via accessories. voltage 6, Hti- inverter 7, voltage divider 8 to the voltage meter 9 to the code connected to the cat, the mutator 3, generator or rapNioHnqecKHx SCGLOB 10, investigated, 11 and ind. Cahors 12, Ragor-controlled organ of the block of gag dyvani. 1. 5. It is connected with the base of the voltage divider 8.

The analyzer of dpamichesch characteristics is as follows.

To measure the current and phase-to-phase characteristics, set the controller 3 to the first position, while the switch 3 podpopet harmonica generator ". 1O to the input of the object under study 11 K through the lag unit x 1 and the amplifier 2 to the input of the indicator 12, as which-O an electronic oscilloscope is used. Then, by setting the amplification factor of amplifier 2 to ed1gai11e and zero delay in delay block 1, the regulators of the generator rapN; oHH4ecK.nx signals 10 set the required value of the signal on its final course at the minimum frequency. Under the effect of signal from generator 1O, at the output of the object under study 11 and at the output of amplifier 2, the signals in the TS, under the action of KOTopi rx, the beam of the indicator 12 will be mixed in a straight line, the arms of the gain indicator of the scoop 12 on the other right, printed on ippikagora 12, for example, under -IS, then on

Generate 10 sets the required frequency value and the same frequency setting value. 11 is set on the frequency scale, voltage divider 6, Irn this phase sigMia .ia on the object under study 11

the oniiCbMsaTb ellipse will change on the screen as well; the voltage is proportional to the frequency and removed from the additional divider of voltage 6 supplied by the source of the reference signal 5 through the inverter 7 supplies the voltage divider 8,

The regulator of the lag unit 1 deforms the ellipse straight, and the regulator of the amplifier 2 coBMeuia this straight with the indicator printed on the screen of the indicator 12, while the moving contact of the voltage divider 8 will be set to a position that is proportional to the set value of the time delay . The value of the phase shift and the gain scale of the amplifier 2, the relative amyly Tyfibi oscillation of the object under study 11 are read by the voltage meter 9, prog}, which is measured in degrees of phase.

In the case of a positive value of the phase shift in the object under study 11, the switch 3 is set to another position, with the switch 3 podklk. the harmonic signals 10 to the object under study 11 through the lag unit 1, and to 1 head 12 through the amplifier 2. The characteristics are measured in a similar way, i. To measure the stability margins against the mutator 3, the switch 3 is set to feedback of the object under study 11, the time lag 1, amplifier 2, connected in series to the input of the disturbance generator 4 to the input of the object under study 11 and the generator of harmonic signals 10 to the input ind Ator 12. Slowly increasing regularity u ruyunigm lag body unit 1 and feeding zaggazdyvanie temporary perturbation perturbation generator 4 is introduced in the analyzed object 11, oscillatory) :) Mode. By varying the frequency of the generator 10, the generator Acor 10 is set on the screen of the indicator 12, the voltage is set on the frequency scale of the additional voltage detector 6, while the voltage meter 9 shows the value of the phase stability margin. Then, in the time lag 1, a zero value of the delay is set, and with the aid of a curvature of the gain of the amplifier 2 and the feeds of arcs from the disturbance generator 4, the object under study 11 is introduced into the self-oscillatory mode; The value of the gain factor will determine the resistance to the akgalitud.

The analysis of p-or dynamic, characteristics of npoiue and cheaper electric meter